Improvement in gas-regulators



FFICE.

ISAAC REHN, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN GAS-REGULATORS.

Specification forming part of Letters Patent No. 163,255, dated May 11,1875; application filed May 1, 1875.

To all whom it may concern:

Be it known that I, ISAAC BEEN, of the city of Philadelphia and State ofPennsylvania, have invented a Mode of Regulating the Flow of Gas toBurners, of which the fol lowing is a specification, reference being hadto the drawing, making part of the same.

The object of my invention is not merely to provide a check to the flowof gas, but such a check that shall be modified by the automatic actionof the device itself, and by which any increase above the normalpressure shall correspondingly close the aperture, and so shut off tothat extent the supply of gas, and also that when a diminution ofpressure occurs from the maximum the aperture shall be en larged toadmit a larger volume of gas.

My regulator is so made that it may be en1 ployed'with the ordinaryburners in use, and the Whole attached to the supply-pipe, and also,when they are made of sufficient capacity, be inserted anywhere betweenthe burners and the meter.

Figure l of the drawing is a halfsection of all parts but the disk, thepiston, and the spring. Fig. 2 shows the device in action, and Fig. 3 anexternal view of the regulator.

Figs. 1 and 2 are drawn on a much enlarged scale, to more clearly revealthe parts. Fig. 3 is natural size.

The same letters indicate the same parts in all the figures.

a is the base, provided with the standard inside screw for attachment tothe supply-pipe. The upper third of this base is cut out, as at b,constituting a chest or valve-chamber, on the outside upper part ofwhich is cut a screw for the attachment of the cap, which thread ismarked 0. d is the cap, made in a separate piece; The inside of theflange, at the bottom, is provided with an inside screw to connect thecap with the top of the chest on the base. The cone f is connected withthe cover cl and flange h, and is provided with the standard outsidethread for connecting the cone with the burner. Through the center ofthe cap and cone is drilled a hole, 6, of suflicient capacity to allowthe play of the piston, and for the flow of gas to the burner. Into thechamber I) is introduced a disk, loosely fitting the diameter of thechamber, and marked k.

To the center of the disk is attached a piston, m, to keep the disk inposition, and around this piston is a spiral spring, a, to react uponthe lifting power of the gas. The chest of chamber 1) is provided withone or more graduated slots, 0, two being about the best practicablenumber, tapering from a capacity sufficient to allow the free flow ofall the gas at a pressure up to about two inches, (watergage,) the broadends of the slots being at the bottom of the chamber, and taperinggradually to nothing at the top. One of these slots I allow to terminatemidway of the height of the chest, and the other to extend nearly to thetop of the chamber.

In Fig. 2 the action may be seen. When the pressure of the gas risesabove the normal state the disk commences to rise, and when at 00,(indicated by the arrow,) one slot will have been cut off, and the otherdiminished in capacity at the point of contact with the disk, and so forall distances will there be a corresponding variation. When the pressureis at the maximum, but a small portion of one slot will be open, which,with the leakage around the disk, supplies sufficient gas at highpressnre.

Between the chamber andthe screw-orifice, at 19, is drilled a hole toadmit the gas from the supply-pipe to the chamber, and the directiontaken by the gas is indicated by the dotted arrows.

I am aware of the previous use of the disk for similar purposes, anddonot, therefore, claim that as my invention but I claim 1. Thecombination of the graduated slots 0 with the movable disk 70, arrangedand constructed as described, or substantially the same, for theregulation of the flow of gas to burners.

2. The combination, in the regulator, of the disk 70, inlet 19, andbearings for the disk, arranged to maintain a gaspassage when the diskis at the limit of its lowest motion, substantially as set forth.

ISAAC REHN.

Witnesses:

E. W. MANNING, J OHN' L. WHITTtoK.

